This website provides interactive and printable math drills/worksheets using JavaScript. The four basic operations and money are included. Customization of the worksheets is possible.
Kidsnumbers.com is a free resource designed by teachers. There are drills and games for the basic operations, time, money, algebra, fractions and geometry.
An action-packed site for elementary and middle school students. Practice math skills, play a logic game, solve word problems, watch a video and have some fun! Has a nice selection of virtual and interactive tools.
Math Resources:
Below please find some web based no cost/low cost math resources available to support math skills for struggling students:
Conceptuamath-support with fractions
http://www.conceptuamath.com/fractions.html
Fun Brain Math Arcade
HSP Math
Interactive Math Worksheets
Math Playground
http://www.shodor.org/interactive
Web-based math activities
http://mathplayground.com
Games, word problems, logic puzzles and math videos
http://www.webmath.com/index3.html
Tutorials
http://illuminations.nctm.org
Teacher and student support pre-K to 12th grade. Activities, lesson plans, standards, web links
http://nlvm.usu.edu/en/nav/vLibrary.html
National Library of Virtual Manipulatives; different math activities by topic and age
http://thinkingblocks.com
Interactive math tool to help students solve multi-step word problems